Apparatus and methods for testing memory cells

a technology of memory cells and apparatus, applied in the field of electromechanical circuits, can solve the problems of affecting the long-term reliability of sram cells and/or peripheral circuitry used to access sram cells, and affecting the performance of computing devices

Active Publication Date: 2012-05-24
ADVANCED MICRO DEVICES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]This summary is provided to introduce a selection of concepts in a simplified form that are further described in the detailed description. This summary is not intended

Problems solved by technology

Latencies associated with memory accesses impair performance of the computing device.
Additionally, component degradation, such as negative bias temperature instability (NBTI), may impact long-term reliability of the SRAM cells and / or the peripheral circuitry utilized to access the SRAM cells.

Method used

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  • Apparatus and methods for testing memory cells
  • Apparatus and methods for testing memory cells
  • Apparatus and methods for testing memory cells

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Embodiment Construction

[0014]The following detailed description is merely illustrative in nature and is not intended to limit the embodiments of the subject matter or the application and uses of such embodiments. As used herein, the word “exemplary” means “serving as an example, instance, or illustration.” Any implementation described herein as exemplary is not necessarily to be construed as preferred or advantageous over other implementations. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description.

[0015]Technologies and concepts discussed herein relate to memory elements for use in computing modules and related methods for testing the memory cells and / or peripheral circuits of memory elements by concurrently selecting or otherwise enabling multiple columns (or arrays) of a memory element while writing and / or reading data to memory cells of the memory element. For example,...

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Abstract

Apparatus and methods are provided for concurrently selecting multiple arrays of memory cells when accessing a memory element. A memory element includes a first array of one or more memory cells coupled to a first bit line node, a second array of one or more memory cells coupled to a second bit line node, access circuitry for accessing a first memory cell in the first array, a first transistor coupled between the first bit line node and the access circuitry, and a second transistor coupled between the second bit line node and the access circuitry. A controller is coupled to the first transistor and the second transistor, and the controller is configured to concurrently activate the first transistor and the second transistor to access the first memory cell in the first array.

Description

TECHNICAL FIELD[0001]Embodiments of the subject matter described herein relate generally to electronic circuits, and more particularly, relate to memory elements for use in computing devices and methods for testing the same.BACKGROUND[0002]Memory elements are widely used in computing applications. For example, a typical computing device may include a combination of volatile and non-volatile memory elements to maintain data, program instructions, and the like that are accessed by a processing unit (e.g., a CPU) during operation of the computing device. Latencies associated with memory accesses impair performance of the computing device. Accordingly, a processing unit typically includes one or more memory elements, known as caches, to provide requested data or instructions to the processing unit with reduced latency. Typically, caches are realized as volatile memory elements. For example, an array of static random access memory (SRAM) cells may be used to provide a cache on a common d...

Claims

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Application Information

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IPC IPC(8): G11C29/00G11C7/08G06F11/07G11C7/22
CPCG11C7/1069G11C7/1096G11C2029/2602G11C29/56G11C2029/0401G11C29/26
InventorHENRION, CARSONDREESEN, MICHAEL
OwnerADVANCED MICRO DEVICES INC